package com.github.wxiaoqi.security.common.util;

import com.github.wxiaoqi.security.common.constant.CommonConstants;

import javax.servlet.http.HttpServletRequest;

/**
 * @author dzl
 */
public class ClientUtil
{
    /**
     * 获取客户端真实ip
     * 
     * @param request
     * @return
     */
    public static String getClientIp(HttpServletRequest request)
    {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || CommonConstants.CHARACTER_UNKNOWN.equalsIgnoreCase(ip))
        {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || CommonConstants.CHARACTER_UNKNOWN.equalsIgnoreCase(ip))
        {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || CommonConstants.CHARACTER_UNKNOWN.equalsIgnoreCase(ip))
        {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
}
